Improvement in door-springs



` A. A, SCHRODER.

Door-Spring.

No. 211,266. Y Patented 1an. 7, 1879.1

Wdh a www,

y a t l ATTORNEY.

UNITED ASTATES. PATENT OFFICE.

ANSON A. SGHRODER, OF WARREN, ILLINOIS.

IMPROVEMENT IN DOOR-SPRINGS.

Specication forming part of Letters Patent No. 2 l 1.266, dated January 7, 1879 application filed y July 6, 1878.

To all whom t may concern:

Be it known that I, ANsoN AUGUSTUS SCHRODER, ofWarren, in the county of J o Daviess and State of Illinois, have invented a new and valuable Improvement in Door-Springs.; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a part of this specication, and to the letters and iigures of reference marked thereon.

Figure l of the drawings is a side view of my improved door-spring in position. Figs. 2 and 3 are sections ot' the door and frame, showing, respectively, a section and a top view of the spring 5 and Figs. 4 and 5 are details.

This invention has relation to improvements in door-springs.

The object of the invention is to devise a door-spring that will not only close the door automatically, but will also keep it open when the said door is opened to its full extent.

The nature of the invention consists in the combination of a loop. or staple secured to the door in a transverse position, and provided with a recess or notch at its end adjacent to the do0r-casing,with a coil-spring upon the door-frame, having an arm projecting therefrom that engages the said loop and slides thereon, whereby, when the door is partially opened, the recoil of the spring causes it to close automatically, but when opened entirely holds it in this position by reason of the engagement of the said arm with the notch or Y recess aforesaid, as will be hereinafter more fully set forth.

In the annexed drawings, the letter A designates a door-casing, to which is hinged in the usual mode a door, B. C represents a coiled spring, composed of two branches, a a',

, coiled around a rod, b, secured to the under face of the doorj'amb. The ends of sections a a are secured by suitable means to the jamb of the door-frame, as shown at o, their coiled portions being carried around rod b. The remaining ends of said spring-sections are carried outin parallel lines, as shown at d, turned vback at their extremities, so as to for-rn hooks e, that, being turned in opposite directions and in symmetrical bends, form a closed end,

j', that engages a metallic staple, D, rigidly secured to the door in line with the projecting arm J, formed by the parts d of the spring. This spring, it may be readily conceived, may be made in one piece.

The staple D is usually formed of wire ot' suitable rigidity to resist the contraction of the spring, and is provided at its end adjaf,

' bears hard-against its outer wall or shoulder,

t, in such manner that the door is prevented i'rom closing until its disengagement therefrom is eit'ected, when it will swing to automatically. y

I am well aware that many differently-coa structed springs have been used for closing doors, and I consequently make no broad claim to such springs; but

What l do claim, and desire to secure by Letters Patent, is-

The combination, with a frame and a door hinged thereto, of the spring C, secured to the frame, and provided with a closed arm, J, and the staple D, provided with bend 't' adjacent to the frame, all arranged and operating as set forth. i

In testimony that I claim the above I have hereunto subscribed my name in the presence of two Witnesses.

ANSON AUGUSTUS SGHRODER.

Witnesses J. H. PHILLIPS, J. M. PHELPs. 

